OECD PISA stands for the Organisation for Economic Co-operation and Development's Programme for International Student Assessment. It is a worldwide study that evaluates the educational performance of 15-year-old students in reading, mathematics, and science. Conducted every three years, PISA aims to assess how well students can apply their knowledge and skills to real-life situations. The results of OECD PISA provide valuable insights into the effectiveness of education systems across different countries. By comparing student performance, policymakers can identify best practices and areas for improvement, ultimately helping to enhance educational outcomes for future generations.